/Engine/Source/Runtime/AppFramework/Public/Widgets/Colors/SColorGradingPicker.h
Callback when the max/min spinner value are changed (only apply if SupportDynamicSliderMaxValue or SupportDynamicSliderMinValue are true)
void OnDynamicSliderMaxValueChanged ( float NewMaxSliderValue, [TWeakPtr](API\Runtime\Core\Templates\TWeakPtr)< [SWidget](API\Runtime\SlateCore\Widgets\SWidget) > InValueChangedSourceWidget, bool IsOriginator, bool UpdateOnlyIfHigher )